Hi guys,
I need to program only 50 bytes on a smart card , but i found only a very complex smart card type in ISO7816 protocol !!!!!
Where can I found a software routine in assembler for motorola 68hc908 microcontroller to program this type of card ????
Or is it possible to found another type of smart card in I2c protocoll ???
I think what you found in ISO7816 are the specs for T=0 and T=1. These are asynchronous communication-protocols for chipcards containing a microprocessor (higher security features ...). For storing only 50 Bytes you can use memory-cards using a synchronous communication (I2C, 2-wire, 3-wire). These cards are also much cheaper than a processor-card. I never tried it out, but for I2C-cards (look for cards containing for example these chips: ST14C02, M14C04 from ST, MCM2814 from Motorola) it should be possible to use the hardware-I2C-interface of the 68HC908 (if it got one). But these synchronous protocols can also be implemented in software (not timing-critical).
For cards look here: https://www.zeitcontrol.de/
I need to use a memory card from Siemens/Infineon. I have the datasheet, but I'm having troubles with my software... someone can show same example? or suggest something I can watch out?